摘要
分析了2010~2014年参加湖南省中稻区试的343个品种的产量构成特点及发展趋势,比较了在区试中产量较高的66个品种的穗粒结构特性。结果表明,湖南省中稻区试品种的总粒数表现出逐年增加的趋势,正朝着大穗型方向发展;有效穗基本稳定在15万~16万/667m2之间;结实率普遍较高,但少有结实率超过90%的组合;千粒重呈现明显的品种遗传特性,随品种在不同生态点保持基本稳定。
In this study, the yield component characters and development trend of 343 varieties tested in mid-season rice regional tests in Hunan over the past 5 years have been analyzed, and comparisons of the panicle-spikelet structure＇s characters among 66 varieties with relatively higher yield performance in the tests have been made. The results show that the varieties in the tests have been developing from total spikelet number increasing year by year to large panicle type, and their stable effective panicles have been at 150 000-160 000 per 667m2 with evident advantages such as general high seed setting rate and obvious hereditary thousand-seed weight.
出处
《湖南农业科学》
2015年第8期11-13,共3页
Hunan Agricultural Sciences
基金
湖南省种子管理局中稻区域试验专项资金(2010~2014)
关键词
杂交水稻
中稻
区试
产量构成
湖南
hybrid rice
mid-season rice
regional test
yield component
Hunan
